praise vs purgatory

praise

noun
  • Commendation; favourable representation in words. 

  • Worship. 

verb
  • To give praise to; to commend, glorify, or worship. 

purgatory

noun
  • Any situation where suffering is endured, particularly as part of a process of redemption. 

adj
  • Tending to cleanse; expiatory. 

How often have the words praise and purgatory occurred in a corpus of books? (source: Google Ngram Viewer )